mmc: jz4740: Code cleanup

Fix wrong code indentation which made the code hard to read, and fix
return with value in void function.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/jz4740_mmc.c

@@ -186,9 +186,9 @@ static void jz4740_mmc_write_irq_reg(struct jz4740_mmc_host *host,
 				     uint32_t val)
 {
 	if (host->version >= JZ_MMC_JZ4780)
-		return writel(val, host->base + JZ_REG_MMC_IREG);
+		writel(val, host->base + JZ_REG_MMC_IREG);
 	else
-		return writew(val, host->base + JZ_REG_MMC_IREG);
+		writew(val, host->base + JZ_REG_MMC_IREG);
 }
 
 static uint32_t jz4740_mmc_read_irq_reg(struct jz4740_mmc_host *host)